Abstract
The application of ectomycorrhizal (ECM) fungi on forest nursery production is regarded as part of good management practice. However, before employing large scale inoculations in a nursery the interaction between ECM symbionts, growth substrate and fertilisation input should be studied to select the most suitable nursery practices for promoting plant growth and ECM colonisation. In this study, seedlings of Quercus ilex were inoculated with Paxillus involutus, Hebeloma mesophaeum or Cenococcum geophilum and grown in three different substrates commonly used in forest nurseries: peat-based compost, forest soil or composted pine bark. The effect of various fertilisation regimes was also studied. The choice of substrate had a significant effect on plant growth and ECM colonisation. The most appropriate combination of substrate and ECM fungus for Q. ilex growth and nutrition was peat and H. mesophaeum. Plants grown on a peat-based compost and inoculated with H. mesophaeum had a significantly greater biomass and leaf phosphorus concentration without fertilisation. Composted pine bark was found not to be suitable for growth or for mycorrhization. If the appropriate growth substrate is selected, it is possible to replace the use of chemical fertilisers by inoculation with selected ECM fungi. This results in a significant increase in plant development, and thus ECM fungi can be recommended as a more environmental friendly biotechnological approach to plant management in the nursery.
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Acknowledgements
This work was supported by the EU program AGRO (DE&D Action) Projecto AGRO 752, Medida 8—Desenvolvimento Tecnológico e Demonstração do Programa Operacional Agricultura e Desenvolvimento Rural. The authors wish to thank Fundação para a Ciência e a Tecnologia, POCI 2010 and FSE (III Quadro Comunitário de Apoio), Grant SFRH/BPD/23749/2005 for financial support. The authors thank Professor David Richardson for assistance with grammar and English and the anonymous reviewers for their helpful comments on the earlier draft of this manuscript.
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The paper is part of the special issue ‘The Potential of exploiting Mycorrhizal associations in semi arid regions’
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Oliveira, R.S., Franco, A.R., Vosátka, M. et al. Management of nursery practices for efficient ectomycorrhizal fungi application in the production of Quercus ilex . Symbiosis 52, 125–131 (2010). https://doi.org/10.1007/s13199-010-0092-0
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DOI: https://doi.org/10.1007/s13199-010-0092-0